Finding the Fourth Proportional to 159,717,870.16, 220,410,807.78 and 86,379,012.16

Step by Step Solution

1. Step 1: Write the proportion equation
   159,717,870.16 : 220,410,807.78 = 86,379,012.16 : x
2. Step 2: Convert to fraction form
   159,717,870.16/220,410,807.78 = 86,379,012.16/x
3. Step 3: Cross multiply
   159,717,870.16x = 220,410,807.78 × 86,379,012.16
4. Step 4: Simplify right side
   159,717,870.16x = 19,038,867,845,196,076
5. Step 5: Solve for x
   x = 19,038,867,845,196,076/159,717,870.16
6. Step 6: Final answer
   x = 119,203,116.26